What It Is: The Prime Workout is a 15-minute strength-training workout developed by celebrity fitness trainer Jackie Warner, aimed to sculpt the shoulders, back, abs and glutes to create the ideal female proportions. That's an hourglass figure, where the shoulders make a perfect V-shape toward the waist and out again at the hip. This workout specifically targets the relevant muscle groups -- click here for a full play-by-play of the workout.

Bedroom Benefits: According to Warner, studies show that men tend to be attracted to female bodies with a low waist-to-hip ratio -- meaning one with a healthy amount of body fat. Sculpting the muscles to create that ideal hourglass proportion triggers a biological reaction in men (and women), making them want to race you to the bedroom, says Warner in her new book, "This Is Why You're Sick and Tired," where you can also find the workout.

Who Should Do It: Having skills and confidence once you're already in the bedroom is one thing, but attracting a partner to get there is another. This workout is for women looking to physically sculpt their body and boost their confidence to look and feel more attractive to sexual partners.